| Schematic outline of the measurement setup. The 12-fs CEP-stable pulse at 1,850 nm is split by a pellicle beam splitter, with a major part of the energy used to generate the SXR attosecond pulse in an effusive âTâ-shaped target. The insets show the measured photon spectrum (top left) and a photograph of the target when operating with 3.5 bar neon (bottom right). The emerging attosecond pulse is focused into a TOF spectrometer, and the remainder is used as a streaking field. Courtesy of Ultrafast Science.
The inset image captures the generation of attosecond pulses, in which ultrashort laser pulses interact with a neon gas jet. This interaction initiates high-harmonic generation, yielding the shortest attosecond soft X-ray pulse ever produced. Image credit: ICFO. |
